NR Data Channel Scheduling via Independent QCL Parameters
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Solution Overview
Problem
In New Radio (NR) systems, the inflexibility of data channel scheduling and interference between transmission/reception points (TRPs) or antenna panels limit the flexibility and performance of data transmission due to the use of shared transmission parameters.
Innovation Solution
The method involves determining transmission parameters for data channels based on unique configuration information for each control resource set (CORESET) or search space, allowing independent scheduling and reducing interference by using quasi-co-location (QCL) type D assumptions for data channel scheduling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If data channels scheduled by different TRPs/panels use the same transmission parameter, then device complexity is reduced, but scheduling flexibility is greatly limited and serious interference is generated between data channels
Solution Approach 1:
The patent segments the shared transmission parameter into multiple independent parameter sets, each associated with a specific TRP or panel. This allows each data channel to have its own dedicated transmission parameters rather than sharing a common set, thereby resolving the contradiction between device complexity and scheduling flexibility.
Solution Approach 2:
The patent applies local quality by configuring transmission parameters specifically for each TRP or panel based on local channel conditions and scheduling requirements. Each data channel receives optimized parameters tailored to its specific transmission characteristics, improving scheduling flexibility without significantly increasing overall system complexity.
2Device complexity
If data channels scheduled by different TRPs/panels use the same transmission parameter, then device complexity is reduced, but serious interference is generated between data channels
Solution Approach 1:
By segmenting the transmission parameters into separate sets for different TRPs/panels, the patent prevents interference between data channels. Each parameter set is independently configured and applied, eliminating the harmful interference that occurs when multiple channels share the same parameters.
Solution Approach 2:
The patent introduces an intermediary mechanism that manages and coordinates the independent parameter sets for different TRPs/panels. This intermediary structure ensures that parameter configurations for one TRP or panel do not interfere with others, while maintaining overall system coherence.
3Adaptability or versatility
If independent data channel configuration information is used for each TRP/panel, then scheduling flexibility and anti-interference performance are improved, but device complexity increases
Solution Approach 1:
The patent employs parameter changes by dynamically adjusting transmission parameters based on the specific requirements of each TRP or panel. This allows the system to achieve high scheduling flexibility and anti-interference performance through adaptive parameter configuration rather than through complex structural changes.
Data Source
AI summary
Disclosed are a method for data transmission, a terminal device, a network device, a chip, a computer-readable storage medium, a computer program product and a computer program. The method comprises: determining, according to data channel configuration information corresponding to a control resource set (CORESET) or a search space, a transmission parameter of a data channel; and transmitting or receiving, based on the transmission parameter, the data channel, wherein the CORESET or the search space is a CORESET or a search space where downlink control information (DCI) used for scheduling the data channel is detected, or, the CORESET or the search space is a CORESET or a search space that uses the same quasi-co-location (QCL) type D assumption as a control channel for scheduling the data channel.